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107 lines
3.3 KiB
107 lines
3.3 KiB
// Copyright 2015 by Thorsten von Eicken, see LICENSE.txt
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//
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// Adapted from: github.com/tuanpmt/esp_bridge, Created on: Jan 9, 2015, Author: Minh
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#ifndef CMD_H
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#define CMD_H
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#include <esp8266.h>
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// Standard SLIP escape chars from RFC
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#define SLIP_END 0300 // indicates end of packet
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#define SLIP_ESC 0333 // indicates byte stuffing
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#define SLIP_ESC_END 0334 // ESC ESC_END means END data byte
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#define SLIP_ESC_ESC 0335 // ESC ESC_ESC means ESC data byte
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typedef struct __attribute__((__packed__)) {
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uint16_t len; // length of data
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uint8_t data[0]; // really data[len]
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} CmdArg;
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typedef struct __attribute__((__packed__)) {
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uint16_t cmd; // command to perform, from CmdName enum
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uint16_t argc; // number of arguments to command
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uint32_t value; // callback pointer for response or first argument
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CmdArg args[0]; // really args[argc]
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} CmdPacket;
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typedef struct {
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CmdPacket *cmd; // command packet header
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uint32_t arg_num; // number of args parsed
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uint8_t *arg_ptr; // pointer to ??
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} CmdRequest;
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typedef enum {
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CMD_NULL = 0,
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CMD_SYNC, // synchronize and clear
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CMD_RESP_V, // response with a value
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CMD_RESP_CB, // response with a callback
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CMD_WIFI_STATUS, // get the current wifi status
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CMD_CB_ADD,
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CMD_CB_EVENTS,
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CMD_GET_TIME, // get current time in seconds since the unix epoch
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CMD_MQTT_SETUP = 10, // set-up callbacks
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CMD_MQTT_PUBLISH, // publish a message
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CMD_MQTT_SUBSCRIBE, // subscribe to a topic
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CMD_MQTT_LWT, // set the last-will-topic and messge
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CMD_REST_SETUP = 20, // set-up callbacks
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CMD_REST_REQUEST, // do REST request
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CMD_REST_SETHEADER, // define header
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CMD_TCP_SETUP = 30, // set-up callbacks
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CMD_TCP_SEND, // send data over TCP socket
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CMD_UDP_SETUP = 40, // set-up callbacks
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CMD_UDP_SEND, // send data over UDP socket
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} CmdName;
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typedef void (*cmdfunc_t)(CmdPacket *cmd);
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typedef struct {
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CmdName sc_name; // name as CmdName enum
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char *sc_text; // name as string
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cmdfunc_t sc_function; // pointer to function
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} CmdList;
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#define CMD_CBNLEN 16
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typedef struct {
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char name[CMD_CBNLEN];
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uint32_t callback;
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} CmdCallback;
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// Used by slip protocol to cause parsing of a received packet
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void cmdParsePacket(uint8_t *buf, short len);
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// Return the info about a callback to the attached uC by name, these are callbacks that the
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// attached uC registers using the ADD_SENSOR command
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CmdCallback* cmdGetCbByName(char* name);
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// Add a callback
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uint32_t cmdAddCb(char *name, uint32_t callback);
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// Responses
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// Start a response
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void cmdResponseStart(uint16_t cmd, uint32_t value, uint16_t argc);
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// Adds data to a response
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void cmdResponseBody(const void* data, uint16_t len);
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// Ends a response
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void cmdResponseEnd();
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//void cmdResponse(uint16_t cmd, uint32_t callback, uint32_t value, uint16_t argc, CmdArg* args[]);
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// Requests
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// Fill out a CmdRequest struct given a CmdPacket
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void cmdRequest(CmdRequest *req, CmdPacket* cmd);
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// Return the number of arguments given a request
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uint32_t cmdGetArgc(CmdRequest *req);
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// Return the length of the next argument
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uint16_t cmdArgLen(CmdRequest *req);
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// Copy next arg from request into the data pointer, returns 0 on success, -1 on error
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int32_t cmdPopArg(CmdRequest *req, void *data, uint16_t len);
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// Skip next arg
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void cmdSkipArg(CmdRequest *req);
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#endif
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